✔ Specifications: - Name: manual/pneumatic dual purpose sleeve conversion connector, 1/2 1/4 3/8 mutual transfer. - Surface Processing: overall quenching forging, black phosphating processing - Material: 50b30 steel - Hardness: (HRC) 40 ± 2 - Sleeve Conversion connector material for chrome vanadium alloy steel, overall forging made, surface is black and white with pattern phosphating processing, overall quenching - 4 pieces in a set is as follows specification: 3/8 hole 1/4 head 1/4 hole 3/8 head 3/8 hole 1/2 head 1/2 hole 3/8 head - ！！！Pieces is OPP bag packing！！！ ✔ Package Included: A Wrench Adapter Set We guarantee to present the best quality products to our customers. Please contact us first if there is any problem with the products, we will provide after-sales service.
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